CN108840993A - D-A-D' asymmetric structure polymeric membrane PEWT as well as preparation method and application thereof - Google Patents

D-A-D' asymmetric structure polymeric membrane PEWT as well as preparation method and application thereof Download PDF

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CN108840993A
CN108840993A CN201810491811.4A CN201810491811A CN108840993A CN 108840993 A CN108840993 A CN 108840993A CN 201810491811 A CN201810491811 A CN 201810491811A CN 108840993 A CN108840993 A CN 108840993A
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pewt
polymeric membrane
electrode
unsymmetric structure
monomer
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刘军磊
李林
欧阳密
张�诚
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Zhejiang University of Technology ZJUT
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Abstract

The invention provides a DAD' asymmetric structure polymeric membrane PEWT as well as a preparation method and application thereof, wherein the preparation method comprises the following steps: under the action of an electron donating group, 2, 7-dibromo-9 fluorenone shown in the formula 1 is subjected to coupling reaction to form an asymmetric DAD 'structural monomer, and polymerization reaction is carried out at room temperature by adopting a cyclic voltammetry polymerization method to obtain an asymmetric DAD' structural polymer film deposited on a working electrode. The method provided by the invention is simple to operate, the monomer yield and the purity of the polymer film are higher, the prepared product has more prominent multicolor display and excellent electrochromic performance, and the material can be applied to electrochromic devices.

Description

A kind of D-A-D ' unsymmetric structure polymeric membrane PEWT and the preparation method and application thereof
Technical field
The present invention relates to D-A-D ' (donor-acceptor-donor ') unsymmetric structure polymeric membrane PEWT that kind has multicolor displaying And preparation method thereof described in the polymeric membrane PEWT of D-A-D ' unsymmetric structure can be applied to prepare electrochromic device.
Technical background
Since the electrochromism of auto polymerization object (PEC) material is found, because it has knot compared to inorganic electrochromic material The advantages that structure is easily modified, and coloration efficiency is high, optical contrast is high and fast response time, it is considered to be next-generation EC material One of developing direction.Currently, the method for realizing electrochromic polymeric compounds multicolor displaying by MOLECULE DESIGN or modification mainly has, Copolymerization between the design and different molecular of donor-receiver (D-A) molecular structure, wherein copolymerization product is not known because of molecular structure Property, it is unfavorable for the control to quality in the mechanism study of electrochromic material discoloration and actual production.
And D-A structure then can Effective Regulation molecule energy band, adjust the electrochromic property of polymer.Nowadays, there are many D-A structure class conjugated polymer is reported, such as with diazosulfide, benzo quinoline oh, thiophen pyrazine, Fluorenone and its derivative be The D-A structure copolymer of receptor.But the application of the understanding and material to its mechanism is still limited, understands conjugated polymer to be deep The molecular structure of electrochromic material and the relationship of its photoelectric properties, solve existing D-A-D asymmetric conjugate polymer P EWE (in fluorenes Ketone both ends are introduced into the Molecularly Imprinted Polymer of identical 3,4-rthylene dioxythiophene (EDOT)) oxidizing potential in electrochromic property Single, discoloration shows the problems such as single optical contrast is general.It is asymmetric total that we devise a kind of D-A-D ' based on Fluorenone Conjugated polymer PEWT (introduces 3,4-rthylene dioxythiophene (EDOT) and the not isoplastic molecule aggregation of triphenylamine at Fluorenone both ends Object), and study molecular structure its color is shown, the influence of state of aggregation pattern, the performances such as optical contrast, and find its compared with The electrochromic property of PEWE is more excellent.
Summary of the invention
There are oxidizing potentials to solve existing D-A-D asymmetric conjugate polymer P EWE, and single, discoloration shows single optics pair The problems such as more general than degree, the object of the present invention is to provide a kind of D-A-D ' dissymmetrical structure polymer P EWT, and finding should It is more abundant that polymer not only makes electrochromic display, but also under certain wavelength, optical contrast with higher.
To achieve the above object, the present invention adopts the following technical scheme that:
A kind of D-A-D ' unsymmetric structure polymeric membrane PEWT, D-A-D ' the unsymmetric structure polymeric membrane PEWT are specifically pressed It is prepared according to following method:
(1) -9 Fluorenone of 2,7-, bis- bromo shown in formula 1 and 4- (diphenyl amido) phenyl boric acid, four (three) phenyl phosphorus palladiums is mixed It closes, under the action of alkaline matter A, is dissolved in organic solvent A in the case where nitrogen is protected, reacts 8-12 at a reflux temperature Hour, reaction mixture B is obtained, it is post-treated to obtain product 2- triphenylamine -7- bromo -9-Fluorenone shown in formula 2;The formula 1 Shown in the ratio between -9 Fluorenone of 2,7-, bis- bromo and 4- (diphenyl amido) phenyl boric acid, the amount of substance of four (two) phenyl phosphorus palladiums be 1: 0.5~1: 0.001~0.005;The alkaline matter A is added in form of an aqueous solutions, and the additional amount of the water is with just molten It solves subject to alkaline matter A;The additional amount of the alkaline matter A is calculated as 2~4mol/L with the volume of the organic solvent A;
(2) by 2- triphenylamine -7- bromo -9-Fluorenone shown in formula 2, (2,3- dihydro-thiophenes are simultaneously [3,4-b]-with tributyl [Isosorbide-5-Nitrae] dioxin -5- base) stannane, bi triphenyl phosphorus palladium chloride, it is molten in the case where nitrogen is protected under the action of alkaline matter B Solution reacts 24-36 hours at a reflux temperature in organic solvent B, obtains reaction mixture C, post-treated to obtain shown in formula 3 D-A-D ' unsymmetric structure monomer EWT;2- triphenylamine -7- bromo -9- the Fluorenone and tributyl (2,3- dihydro-thiophenes And [3,4-b]-[Isosorbide-5-Nitrae] dioxin -5- base) stannane, bi triphenyl phosphorus palladium chloride the ratio between the amount of substance be 1: 1~2: 0.001~0.005;The alkaline matter B is added in form of an aqueous solutions, and the additional amount of the water to dissolve basic species just Subject to matter B;The additional amount of the organic solvent A is with the meter of the substance of -9 Fluorenone of 2,7-, bis- bromo shown in the formula 1 For 10~100mL/mmol;The additional amount of the alkaline matter B is calculated as 2~4mol/L with the volume of the organic solvent B; The additional amount of the organic solvent B is calculated as with the amount of 2- triphenylamine -7- bromo -9-Fluorenone substance shown in the formula 2 10~100mL/mmol;
(3) D-A-D ' unsymmetric structure monomer EWT obtained by step (3), support electrolyte are dissolved in electroanalysis solvent and are obtained Electrolyte, in three-electrode cell, using cyclic voltammetric anodic oxidation polymerization method, in polymerization voltage range in 0~1.6V Vs.Ag/AgCl carries out deposition reaction, after fully reacting, obtains being deposited on work under conditions of polymerisation loop circle number is 2~32 Make the thin polymer film on electrode, through organic solvent cleaning, is dried to obtain thin polymer film PEWT shown in formula 4;The branch Support electrolyte is ammonium salt, lithium salts or 1- butyl -3- methyl imidazolium tetrafluoroborate;It is 1 that the electrolytic cell solvent, which is volume ratio: 0.1~10 acetonitrile (chromatographic grade) and the mixed solvent of methane dioxide (chromatographic grade);D-A-D ' the unsymmetric structure monomer EWT supports the additional amount of electrolyte in terms of the volume beam of the electroanalysis solvent, D-A-D ' the unsymmetric structure list Initial final concentration of 0.1~10mmol/L electroanalysis solvent of body EWT, initial final concentration of the 0.01 of the supporting electrolyte ~1mol/L electroanalysis solvent;
The three-electrode system is made of electrolytic cell, working electrode, auxiliary electrode and reference electrode, the work electricity Extremely perhaps the PET conductive film electrode auxiliary electrode is platinum electrode or platinum by indium tin oxide-coated glass (ITO), FTO Carbon electrode, it with the potassium chloride solution of 3mol/L is that the first liquid connects that the reference electrode, which is Ag/AgCl, with the electrolysis Liquid is that the second liquid connects;
Further, -9 Fluorenone of 2,7-, bis- bromo shown in the formula 1 can be prepared as follows:
Using Fluorenone as raw material, iodine be catalyst, water is solvent, and bromine is added dropwise while stirring, and 100 DEG C of bromos are anti- It answers 4-6 hours, obtains reaction mixture A, filtered after system is cooling, gained filter cake is successively with being saturated solution of sodium bisulfite, go Ion water washing obtains -9 Fluorenone of 2,7-, bis- bromo shown in formula 1 after dry;The iodine and Fluorenone, bromine substance amount it Than being 1: 150: 300~450;The additional amount of the water is calculated as 1.5~2ml/mmol with the amount of the substance of the Fluorenone.
Further, in step (1), the alkaline matter A is sodium carbonate, sodium bicarbonate or potassium carbonate etc., preferably carbon Sour potassium.
Further, in step (1), the organic solvent A is that tetrahydrofuran is mixed with what toluene mixed in any proportion The mixed liquor of tetrahydrofuran and toluene that bonding solvent, preferably volume ratio are 1: 0.5~2.
Further, in step (1), the last handling process of gained reaction mixture B is:After reaction, it is reacted to gained Methylene chloride is added in mixed liquid B to be extracted, merging organic phase is simultaneously dry with anhydrous magnesium sulfate, and revolving mixes sample, with volume ratio It is that mobile phase composition is obtained through chromatography for 1: 0.5-1.5 petroleum ether (PE) and the mixed solvent of methylene chloride (DCM) 2- triphenylamine -7- bromo -9-Fluorenone shown in formula 2.
Further, in step (2), the alkaline matter B is sodium carbonate, sodium bicarbonate or potassium carbonate etc., preferably carbon Sour potassium.
Further, in step (2), the organic solvent B is tetrahydrofuran and toluene mixing of connecing that arbitrary proportion mixes The volume ratio of bonding solvent, preferably tetrahydrofuran and toluene is 1: 0.5~2.
Further, in step (2), the last handling process of gained reaction mixture C is:After reaction, anti-to gained It answers the mix reagent that deionized water and methylene chloride are added in mixed liquor C to be extracted, merges organic phase and with anhydrous thin acid magnesium Dry, revolving mixes sample, the mixed solvent of the petroleum ether (PE) and methylene chloride (DCM) that be 1: 0.5-1.5 with volume ratio is to flow Phase component obtains D-A-D ' unsymmetric structure monomer EWT shown in formula 3 through chromatography;
Further, in step (3), the ammonium salt is tetrabutylammonium perchlorate (TBAP) or tetrabutyl ammonium hexafluorophosphate (TBAPF6)。
Further, in step (3), the reason salt is lithium hexafluoro phosphate, LiBF4 or trifluoromethyl sulfonic acid lithium etc..
Further, in step (3), it is described for cleaning organic solvent be volume ratio be 1: 0.1~10 acetonitrile with The mixed solvent of methylene chloride.
In step (3), the working electrode is successively 0.1% sodium hydroxide solution, dehydrated alcohol, third in mass fraction Supersound washing is carried out in ketone, toluene, dehydrated alcohol, toluene and acetone, preferably ultrasonic time is respectively 15min.
Further, in step (3), the auxiliary electrode needs are processed by shot blasting.
Thin polymer film of the present invention with a thickness of 30~630nm.
The structure of monomer of the present invention is by nuclear magnetic resonance spectroscopy (NMR) and mass spectral characteristi;Have to the characterization of polymer Scanning electron microscope (SEM), ultraviolet-visible spectrum (UV), electrochemical workstation.By the NMR and mass spectrum of monomer, it was confirmed that single The formation of body;By the combination of ultraviolet-visible spectrum (UV) and electrochemical workstation, its purple under different voltages has been obtained Outside-visible spectrum absorbs and the contrast under different spectrum, response time, and then directly confirms D-A-D ' unsymmetric structure one The color for improving electrochromic material under fixed condition shows, optical contrast or response time;It is right by scanning electron microscope (SEM) The pattern of resulting polymers film is characterized, it was demonstrated that D-A-D ' unsymmetric structure is relative to D-A-D symmetrical structure to electroluminescent change The state of aggregation pattern of color material is brought greater impact.
Compared with prior art, the beneficial effects of the present invention are:
(1) polymerization process for preparing of D-A-D ' dissymmetrical structure material is easy in the present invention, does not need harsh reaction item Part can be carried out operating at room temperature, and without complicated purification process, product purity is higher, and preparation energy consumption is lower, and saves The moulding process of material, therefore this method is easy to operate, cost is relatively low, easily controllable structure (size, thickness and character etc.), Be conducive to commercial applications.
(3) compared to D-A-D symmetrical structure PEWE, what electrochemistry was prepared in the present invention is film material, the shape of film Looks are more fluffy, and after stability test, discovery PEWT film pattern variation is little;Pass through the actual assembled to the polymeric membrane, hair Now the polymerization membrane rigidity is larger, and it is more crisp to show as film, is easily destroyed, and need to improve in probing into from now on it.
(4) in the present invention, by the electrochemistry cyclic voltammetry curve of polymeric membrane it is found that D-A-D ' dissymmetrical structure conjugated polymers The more redox sites of object have more metastable states.
(5) the D-A-D ' dissymmetrical structure conjugated polymer PEWT has more redox peaks and richer color Display.And as the raising of voltage, PEWT have more colors, when being in middle condition, which is shown as BurlyWood;With The raising of voltage, the film slowly become blue, when reaching 0.9V to voltage, be shown as bright rock grey;Then, voltage is slowly brought up to 1.4V is shown as mine purple.And in PEWE under condition it is solarization color, it is gray purple under oxidation state, color shows more single.
(6) it is measured by film thickness of the Dektak-XT surface profiler under several to material difference polymerization circle, finds D-A- D ' unsymmetric structure material PEWT polymerize what circle number increased with cyclic voltammetric compared to D-A-D symmetrical structure material PEWE, film thickness Faster, which may exist certain related with the solubility and membrane structure of material monomer, need to continue to explore from now on.
(7) under film thickness, at 1100nm, contrast rises to the 48.8% of PEWT by the 313% of PEWE;It is right at 650nm It is increased to the 26.7% of PEWT by the 11.4% of PEWE than degree, relative to D-A-D symmetrical structure polymeric membrane PSWS, triphenylamine base The introducing of group has significantly alterred it in visible and near infrared region optical contrast.
Detailed description of the invention
Fig. 1 schemes for the SEM of thin polymer film obtained in comparative example;
Fig. 2 is the cyclic voltammogram of monomer polymerization in comparative example;
Fig. 3 is the cyclic voltammogram of polymeric membrane in comparative example;
Fig. 4 schemes for the SEM of thin polymer film obtained in embodiment 1;
Fig. 5 is the cyclic voltammogram of monomer polymerization in embodiment 1;
Fig. 6 is the cyclic voltammogram of polymeric membrane in embodiment 1;
Fig. 7 is the measurement chart of thin polymer film film thickness in comparative example and embodiment (using Dektak-XT surface profile Instrument);
Fig. 8 is the schematic diagram of thin polymer film PEWE and PEWT optical contrast under identical film thickness;
Specific embodiment
Below by specific embodiment, the present invention is described further, but protection scope of the present invention is not limited in This.The present invention prepares thin polymer film using cyclic voltammetric polymerization, and the instrument used in whole preparation process is electrochemistry work It stands (CHI660E, Shanghai Chen Hua instrument company) and three-electrode system.
In embodiment, the voltage range when PEWT polymeric membrane photoelectric properties are tested is 0~1.6V vs.Ag/ AgCl。
Prepare -9 Fluorenone of 2,7-, bis- bromo first, in 100mL cleaning flask middle addition 4g Fluorenone, 35mL aqueous solvent and 0.015g iodine catalyst, and 3mL bromine is added dropwise under stiring, 100 degree are heating 6 hours lower, filter after system is cooling, gained filter cake It is successively washed with saturation solution of sodium bisulfite, deionized water, obtains yellow solid target product after dry.
In addition, need to prepare tributyl (2,3- dihydro-thiophenes simultaneously [3,4-b]-[Isosorbide-5-Nitrae] dioxin -5- base) stannane in experiment, Specific step is as follows:At -78 DEG C, n-BuLi (1.6M) is slowly added dropwise, and stir 0.5h, then, temperature is increased to -40 DEG C, positive tributyltin chloride (18.8mmol, 6.12g) is slowly added dropwise, and react 8h at room temperature, separate up to tributyl (2, 3- dihydro-thiophene simultaneously [3,4-b]-[Isosorbide-5-Nitrae] dioxin -5- base) stannane.
Comparative example
(1) preparation of monomer EWE
By -9 Fluorenone (3mmol, 1.014g) of 2,7-, bis- bromo, tributyl (2,3- dihydro-thiophenes simultaneously [3,4-b]-[Isosorbide-5-Nitrae] two Dislike English -5- base) and stannane (7mmol, 3.0248 g), potassium carbonate (3mmol, 1.3821g) and bi triphenyl phosphorus palladium chloride (0.025mmol, 0.01755g) is dissolved in the mixed solution of tetrahydrofuran (20ML) and toluene (30ML), and is added 2ml's Deionized water flows back 24 hours in nitrogen atmosphere, after system is cooling, is extracted with deionized water and methylene chloride mix reagent It takes, gained is organic to be added to anhydrous thin sour magnesium drying, and revolving mixes sample later, selects corresponding mobile phase (PE: DCM=1: 1.5) Column was chromatographed, monomer (EWE) is finally obtained.1H NMR (500MHz, CDCl3) δ 8.07 (d, J=1.6Hz, 1H), 7.82 (dd, J=7.9,1.7Hz, 1H), 7.78 (d, J=1.8Hz, 1H), 7.61 (dd, J=7.9,1.8Hz, 1H), 7.49 (d, J= 7.9Hz, 1H), 7.39 (d, J=7.9Hz, 1H), 6.36 (s, 1H), 4.38-4.34 (m, 2H), 4.30-4.25 (m, 3H) .MALDI-TOF-MS(M)(m/z):461.1[M+H]+.
(2) preparation of polymer (PEWE) material
EWE monomer (1mmol, 0.0046g), tetrabutylammonium perchlorate (1mmol, 0.342g) are dissolved in 7ml methylene chloride In the mixed solution of 3ml acetonitrile, it is configured to that monomer concentration is 0.005mol/L, supporting electrolyte concentration is the mixed of 0.1mol/L Solution is closed as electrolyte.Three-electrode cell system is selected, (is successively existed using indium tin electro-conductive glass (ITO) as working electrode Supersound washing 15min in 0.1% sodium hydroxide solution, dehydrated alcohol, interior ketone, toluene, dehydrated alcohol, toluene and acetone), to throw The platinum filament that light is crossed is reference electrode (Ag/ as auxiliary electrode (platinum filament length 4cm), using biliquid direct type silver/silver chloride electrode The potassium chloride solution of AgCl, 3mol/L connect as the first liquid, and the electrolyte that above-mentioned preparation obtains connects as the second liquid).In room Under warm (25 DEG C), thin polymer film, cyclic voltammetric are prepared using cyclic voltammetric anodic oxidation polymerization method by electrochemical workstation Method refers to one linear ramp of application on the electrode, is scanned with constant pace of change, when the termination for reaching a certain setting When voltage, then reversely it is returned to the starting voltage of former setting.Therefore, the starting voltage 0v of the monomer polymerization is set first, is terminated Voltage 1.6v and sweep speed 0.1v/s, and polymerisation loop circle number is set as 26 (obtained polymeric film thicknesses are 630nm), start Electrochemical workstation;Such as Fig. 2, which is the cyclic voltammetric polymerization curve of monomer, and by Tu Kejia, the oxidizing potential of monomer is 0.71v shows that polymerization current potential is lower, and energy consumption is less, is conducive to actual production application.It is conductive to polymerize power cut-off electrode ITO Glass surface deposited one layer of polymeric film, be cleaned with methylene chloride, and the work of surface deposited polymer membrane is obtained after dry Make electrode, as shown in Figure 1, seeing that polymeric film surface state of aggregation is more homogeneous close by electronic scanner microscope, through 500 After a cyclic voltammetric stability test, polymeric membrane forms more fluff structure, shows that polymerization membrane stability is not satisfactory.
(3) polymer (PEWE) electrochemical property test
Tetrabutylammonium perchlorate (1mmol, 0.342g) is dissolved in the mixed solution of 6ml methylene chloride and 4ml acetonitrile, is matched The electrolyte solution that concentration is 0.1mol/L is made, selects three-electrode cell system, it is electric using polymeric membrane PEWE as work Reference electricity is done using biliquid direct type silver/silver chloride electrode using polished platinum filament as auxiliary electrode (platinum filament length 4cm) in pole (potassium chloride solution of Ag/AgCl, 3mol/L connect as the first liquid, and the electrolyte that above-mentioned preparation obtains is as the second liquid for pole It connects).At room temperature, the cyclic voltammetry curve of the polymeric membrane is tested, it has been found that the polymeric membrane only has a pair of of redox peaks, And color change is single, under middle condition, is shown as solarization color, with the raising of voltage, oxidation state becomes gray purple.
Embodiment 1
(1) preparation of monomer EWT
First by -9 Fluorenone (3mmol, 1.044g) of 2,7-, bis- bromo, 4- (diphenyl amido) phenyl boric acid (1.5mmol, 0.438g), the feelings that potassium carbonate (2mmol, 0.2764g) and four (three) phenyl phosphorus palladiums (0.0025mmol, 0.0311g) are protected in nitrogen It is dissolved under condition in the mixed solution of tetrahydrofuran (20ML) and toluene (30ML), and the deionized water of 2ml is added, flowed back 8 Hour, it after system is cooling, is extracted with deionized water and methylene chloride mix reagent, the organic anhydrous magnesium sulfate that is added to of gained is done Dry, revolving mixes sample later, selects corresponding mobile phase to chromatograph column, finally obtains 2- triphenylamine -7- bromo -9- Fluorenone monomer; Later, by 2- triphenylamine -7- bromo -9-Fluorenone monomer (3mmol, 1.503g), tributyl, (2,3- dihydro-thiophenes are simultaneously [3,4-b] - [Isosorbide-5-Nitrae] dioxin -5- base) stannane (3mmol, 1.2963g), potassium carbonate (2mmol, 0.2764g) and bi triphenyl phosphorus dichloride Palladium (0.025mmol, 0.01755g) is dissolved in the mixed solution of tetrahydrofuran (20mL) and toluene (30mL), and 2ml is added Deionized water, flow back in nitrogen atmosphere 24 hours, after system is cooling, with deionized water and methylene chloride mix reagent Extraction, gained is organic to be added to that anhydrous magnesium sulfate is dry, and revolving mixes sample later, select corresponding mobile phase (PE: DCM=1: 1.5) column was chromatographed to get monomer (EWT).1H NMR (500MHz, DMSO) δ 8.08 (d, J=1.4Hz, 1H), 7.92 (d, J =1.5Hz, 1H), 7.82 (dd, J=7.9,1.7Hz, 1H), 7.73 (dd, J=7.8,1.8Hz, 1H), 7.51 (d, J=3.9 Hz, 1H), 7.50 (d, J=4.1Hz, 1H), 7.39 (dd, J=3.6,1.0Hz, 1H), 7.32 (dd, J=5.1,1.0Hz, 1H), 7.11 (dd, J=5.1,3.6 Hz, 1H), 6.35 (s, 1H), 4.40-4.34 (m, 2H), 4.30-4.24 (m, 2H)) MALDI- TOF-MS(M)(m/z):564.1[M+H]+.
(2) preparation of polymer (PEWT) material
EWT monomer (1mmol, 0.00563g), tetrabutylammonium perchlorate (1mmol, 0.342g) are dissolved in 7ml methylene chloride In the mixed solution of 3ml acetonitrile, it is configured to that monomer concentration is 0.005mol/L, supporting electrolyte TBAP concentration is 0.1mol/L Mixed solution as electrolyte.Select three-electrode cell system, using indium tin electro-conductive glass (ITO) as working electrode (according to The secondary supersound washing 15min in 0.1% sodium hydroxide solution, dehydrated alcohol, acetone, toluene, dehydrated alcohol, toluene and acetone), Using polished platinum filament as auxiliary electrode (platinum filament length 4cm), reference electrode is done using biliquid direct type silver/silver chloride electrode (potassium chloride solution of Ag/AgCl, 3mol/L connect as the first liquid, and the electrolyte that above-mentioned preparation obtains connects as the second liquid). Under room temperature (25 DEG C), thin polymer film is prepared using cyclic voltammetric anodic oxidation polymerization method, sets the monomer polymerization first Starting voltage 0v, final voltage 1.6v and sweep speed 0.1v/s, and set polymerisation loop circle number and (obtain polymeric film thicknesses as 16 For 630nm), start the working procedure of electrochemical workstation.Such as Fig. 5, which is the cyclic voltammetric polymerization curve of monomer, by Figure is it is found that the oxidizing potential of monomer is 1.1v and 1.47v, and monomer molecule has excellent polymerization film formation ability, thus may be used Know that there are more oxidation-reduction potentials compared to EWE, structures alone EWT.It polymerize power cut-off electrode ITO electro-conductive glass Surface deposited one layer of polymeric film, be cleaned with methylene chloride, and the work electricity of surface deposited polymer membrane is obtained after dry Pole, as shown in Figure 4, polymer is more loose relatively above on the surface of thin polymer film, but after 500 circulations, pattern Variation is smaller, illustrates that polymeric membrane is relatively stable.
(3) polymer (PEWT) electrochemical property test
Tetrabutylammonium perchlorate (1mmol, 0.342g) is dissolved in the mixed solution of 6ml methylene chloride and 4ml acetonitrile, is matched The electrolyte solution that concentration is 0.1mol/L is made, selects three-electrode cell system, it is electric using polymeric membrane PEWT as work Reference electricity is done using biliquid direct type silver/silver chloride electrode using polished platinum filament as auxiliary electrode (platinum filament length 4cm) in pole (potassium chloride solution of Ag/AgCl, 3mol/L connect as the first liquid, and the electrolyte that above-mentioned preparation obtains is as the second liquid for pole It connects).At room temperature, test the cyclic voltammetry curve of the polymeric membrane, i.e., in the case where polymerizeing 0~1.6V of voltage range vs.Ag/AgCl, To the working electrode containing polymeric membrane with rate loop voltammetric scan one week of 0.1v/s, it will be appreciated from fig. 6 that the D-A-D ' is asymmetric There are structure conjugated polymer PEWT more redox peaks and richer color to show when in middle condition, the material It is shown as BurlyWood;With the raising of voltage, which slowly becomes blue, when reaching 0.9V to voltage, is shown as bright rock grey;With Afterwards, voltage is slowly brought up to 1.4V, is shown as mine purple.As Fig. 8 and with shown in table 1, under identical film thickness, at 1100nm, compare Degree rises to the 48.8% of PEWT by the 313% of PEWE;At 650nm, contrast is increased to PEWT's by the 11.4% of PEWE 26.7%, relative to D-A-D symmetrical structure polymeric membrane PSWS, the introducing of trianilino group has significantly alterred it visible and close The optical contrast of infrared region, specific spectrum dynamic parameters are as shown in table 1.
Table 1 is the spectrum dynamic performance of thin polymer film PEWE and PEWT in comparative example and embodiment 1
Embodiment 2
(1) preparation of monomer EWT
First by -9 Fluorenone (3mmol, 1.044g) of 2,7-, bis- bromo, 4- (diphenyl amido) phenyl boric acid (1.5mmol, 0.438g), the feelings that potassium carbonate (2mmol, 0.2764g) and four (three) phenyl phosphorus palladiums (0.0025mmol, 0.0311g) are protected in nitrogen It is dissolved under condition in the mixed solution of tetrahydrofuran (20ML) and toluene (30ML), and the deionized water of 2ml is added, flowed back 6 Hour, it after system is cooling, is extracted with deionized water and methylene chloride mix reagent, the organic anhydrous magnesium sulfate that is added to of gained is done Dry, revolving mixes sample later, selects corresponding mobile phase to chromatograph column, finally obtains 2- triphenylamine -7- bromo -9- Fluorenone monomer; Later, by 2- triphenylamine -7- bromo -9-Fluorenone monomer (3mmol, 1.503g), tributyl, (2,3- dihydro-thiophenes are simultaneously [3,4-b] - [Isosorbide-5-Nitrae] dioxin -5- base) stannane (3mmol, 1.2963g), potassium carbonate (2mmol, 0.2764g) and bi triphenyl phosphorus dichloride Palladium (0.025mmol, 0.01755g) is dissolved in the mixed solution of tetrahydrofuran (20mL) and toluene (30mL), and 2ml is added Deionized water, flow back in nitrogen atmosphere 36 hours, after system is cooling, with deionized water and methylene chloride mix reagent Extraction, gained is organic to be added to that anhydrous thin sour magnesium is dry, and revolving mixes sample later, select corresponding mobile phase (PE: DCM=1: 1.5) column was chromatographed to get monomer (EWT).1H NMR (500MHz, DMSO) δ 8.08 (d, J=1.4Hz, 1H), 7.92 (d, J =1.5Hz, 1H), 7.82 (dd, J=7.9,1.7Hz, 1H), 7.73 (dd, J=7.8,1.8Hz, 1H), 7.51 (d, J=3.9 Hz, 1H), 7.50 (d, J=4.1Hz, 1H), 7.39 (dd, J=3.6,1.0Hz, 1H), 7.32 (dd, J=5.1,1.0Hz, 1H), 7.11 (dd, J=5.1,3.6 Hz, 1H), 6.35 (s, 1H), 4.40-4.34 (m, 2H), 4.30-4.24 (m, 2H)) MALDI- TOF-MS(M)(m/z):564.1[M+H]+.
(2) preparation of polymer (PEWT) material
EWT monomer (1mmol, 0.00563g), tetrabutylammonium perchlorate (1mmol, 0.342g) are dissolved in 7ml methylene chloride In the mixed solution of 3ml acetonitrile, it is configured to that monomer concentration is 0.005mol/L, supporting electrolyte TBAP concentration is 0.1mol/L Mixed solution as electrolyte.Select three-electrode cell system, using indium tin electro-conductive glass (ITO) as working electrode (according to The secondary supersound washing 15min in 0.1% sodium hydroxide solution, dehydrated alcohol, acetone, toluene, dehydrated alcohol, toluene and acetone), Using polished platinum filament as auxiliary electrode (platinum filament length 4cm), reference electrode is done using biliquid direct type silver/silver chloride electrode (potassium chloride solution of Ag/AgCl, 3mol/L connect as the first liquid, and the electrolyte that above-mentioned preparation obtains connects as the second liquid). Under room temperature (25 DEG C), thin polymer film is prepared using cyclic voltammetric anodic oxidation polymerization method, sets the monomer polymerization first Starting voltage 0v, final voltage 1.6v and sweep speed 0.1v/s, and set polymerisation loop circle number and (obtain polymeric film thicknesses as 16 For 630nm), start the working procedure of electrochemical workstation.By the cyclic voltammetric polymerization curve of monomer it is found that the oxygen of monomer Change current potential is 1.1v and 1.47v, and monomer molecule has excellent polymerization film formation ability, compared to EWE, structures alone EWT With more oxidation-reduction potentials.Polymerization power cut-off electrode ITO conductive glass surface deposited one layer of polymeric film, use Methylene chloride cleaning obtains the working electrode of surface deposited polymer membrane, is characterized by scanning electron microscope it is found that polymer after dry Polymer is more loose relatively above on the surface of film, but after 500 circulations, pattern variation is smaller, illustrates polymeric membrane It is relatively stable.
(3) polymer (PEWT) electrochemical property test
Tetrabutylammonium perchlorate (1mmol, 0.342g) is dissolved in the mixed solution of 6ml methylene chloride and 4ml acetonitrile, is matched The electrolyte solution that concentration is 0.1mol/L is made, selects three-electrode cell system, it is electric using polymeric membrane PEWT as work Reference electricity is done using biliquid direct type silver/silver chloride electrode using polished platinum filament as auxiliary electrode (platinum filament length 4cm) in pole (potassium chloride solution of Ag/AgCl, 3mol/L connect as the first liquid, and the electrolyte that above-mentioned preparation obtains is as the second liquid for pole It connects).At room temperature, test the cyclic voltammetry curve of the polymeric membrane, i.e., in the case where polymerizeing 0~1.6V of voltage range vs.Ag/AgC1, To the working electrode containing polymeric membrane with rate loop voltammetric scan one week of 0.1v/s, by testing it is found that the D-A-D ' is not right Claim structure conjugated polymer PEWT that there are more redox peaks and richer color to show when in middle condition, the material Material is shown as BurlyWood;With the raising of voltage, which slowly becomes blue, when reaching 0.9V to voltage, is shown as bright rock grey;With Afterwards, voltage is slowly brought up to 1.4V, is shown as mine purple.Under identical film thickness, at 1100nm, contrast is by the 31.3% of PEWE Rise to the 48.8% of PEWT;At 650nm, contrast is increased to the 26.7% of PEWT by the 11.4% of PEWE, relative to D-A-D pairs Claim topology convergence film PSWS, the introducing of trianilino group has significantly alterred it in visible and near infrared region optical contrast.
Embodiment 3
(1) preparation of monomer EWT
First by -9 Fluorenone (3mmol, 1.044g) of 2,7-, bis- bromo, 4- (diphenyl amido) phenyl boric acid (1.5mmol, 0.438g), the feelings that potassium carbonate (2mmol, 0.2764g) and four (three) phenyl phosphorus palladiums (0.0025mmol, 0.0311g) are protected in nitrogen It is dissolved under condition in the mixed solution of tetrahydrofuran (20ML) and toluene (30ML), and the deionized water of 2ml is added, flowed back 8 Hour, it after system is cooling, is extracted with deionized water and methylene chloride mix reagent, the organic anhydrous magnesium sulfate that is added to of gained is done Dry, revolving mixes sample later, selects corresponding mobile phase to chromatograph column, finally obtains 2- triphenylamine -7- bromo -9- Fluorenone monomer; Later, by 2- triphenylamine -7- bromo -9-Fluorenone monomer (3mmol, 1.503g), tributyl, (2,3- dihydro-thiophenes are simultaneously [3,4-b] - [Isosorbide-5-Nitrae] dioxin -5- base) stannane (3mmol, 1.2963g), potassium carbonate (2mmol, 0.2764g) and bi triphenyl phosphorus dichloride Palladium (0.025mmol, 0.01755g) is dissolved in the mixed solution of tetrahydrofuran (20mL) and toluene (30mL), and 2ml is added Deionized water, flow back in nitrogen atmosphere 24 hours, after system is cooling, with deionized water and methylene chloride mix reagent Extraction, gained is organic to be added to that anhydrous magnesium sulfate is dry, and revolving mixes sample later, select corresponding mobile phase (PE: DCM=1: 1.5) column was chromatographed to get monomer (EWT).1H NMR (500MHz, DMSO) δ 8.08 (d, J=1.4Hz, 1H), 7.92 (d, J =1.5Hz, 1H), 7.82 (dd, J=7.9,1.7Hz, 1H), 7.73 (dd, J=7.8,1.8Hz, 1H), 7.51 (d, J=3.9 Hz, 1H), 7.50 (d, J=4.1Hz, 1H), 7.39 (dd, J=3.6,1.0Hz, 1H), 7.32 (dd, J=5.1,1.0Hz, 1H), 7.11 (dd, J=5.1,3.6 Hz, 1H), 6.35 (s, 1H), 4.40-4.34 (m, 2H), 4.30-4.24 (m, 2H)) MALDI- TOF-MS(M)(m/z):564.1[M+H]+.
(2) preparation of polymer (PEWT) material
EWT monomer (1mmol, 0.00563g), tetrabutylammonium perchlorate (1mmol, 0.342g) are dissolved in 7ml methylene chloride In the mixed solution of 3ml acetonitrile, it is configured to that monomer concentration is 0.005mol/L, supporting electrolyte TBAP concentration is 0.1mol/L Mixed solution as electrolyte.Select three-electrode cell system, using indium tin electro-conductive glass (ITO) as working electrode (according to The secondary supersound washing 15min in 0.1% sodium hydroxide solution, dehydrated alcohol, acetone, toluene, dehydrated alcohol, toluene and acetone), Using polished platinum filament as auxiliary electrode (platinum filament length 4cm), reference electrode is done using biliquid direct type silver/silver chloride electrode (potassium chloride solution of Ag/AgCl, 3mol/L connect as the first liquid, and the electrolyte that above-mentioned preparation obtains connects as the second liquid). Under room temperature (25 DEG C), thin polymer film is prepared using cyclic voltammetric anodic oxidation polymerization method, sets the monomer polymerization first Starting voltage 0v, final voltage 1.6v and sweep speed 0.05v/s, and set polymerisation loop circle number and (obtain polymerization film thickness as 16 Degree is 630nm), start the working procedure of electrochemical workstation.Curve is polymerize it is found that monomer by the cyclic voltammetric of monomer Oxidizing potential is 1.1v and 1.47v, and monomer molecule has excellent polymerization film formation ability, compared to EWE, the structures alone EWT has more oxidation-reduction potentials.It is thin that polymerization power cut-off electrode ITO conductive glass surface deposited one layer of polymeric Film is cleaned with methylene chloride, and the working electrode of surface deposited polymer membrane is obtained after dry, by scanning electron microscope characterization it is found that Polymer is more loose relatively above on the surface of thin polymer film, but after 500 circulations, pattern changes smaller, explanation Polymeric membrane is relatively stable.
(3) polymer (PEWT) electrochemical property test
Tetrabutylammonium perchlorate (1mmol, 0.342g) is dissolved in the mixed solution of 6ml methylene chloride and 4ml acetonitrile, is matched The electrolyte solution that concentration is 0.1mol/L is made, selects three-electrode cell system, it is electric using polymeric membrane PEWT as work Reference electricity is done using biliquid direct type silver/silver chloride electrode using polished platinum filament as auxiliary electrode (platinum filament length 4cm) in pole (potassium chloride solution of Ag/AgCl, 3mol/L connect as the first liquid, and the electrolyte that above-mentioned preparation obtains is as the second liquid for pole It connects).At room temperature, test the cyclic voltammetry curve of the polymeric membrane, i.e., in the case where polymerizeing 0~1.6V of voltage range vs.Ag/AgCl, To the working electrode containing polymeric membrane with rate loop voltammetric scan one week of 0.05v/s, by testing it is found that the D-A-D ' is not right Claim structure conjugated polymer PEWT that there are more redox peaks and richer color to show when in middle condition, the material Material is shown as BurlyWood;With the raising of voltage, which slowly becomes blue, when reaching 0.9V to voltage, is shown as bright rock grey;With Afterwards, voltage is slowly brought up to 1.4V, is shown as mine purple.Under identical film thickness, at 1100nm, contrast is by the 31.3% of PEWE Rise to the 48.8% of PEWT;At 650nm, contrast is increased to the 26.7% of PEWT by the 11.4% of PEWE, relative to D-A-D pairs Claim topology convergence film PSWS, the introducing of trianilino group has significantly alterred it in visible and near infrared region optical contrast.
Embodiment 4
(1) preparation of monomer EWT
First by -9 Fluorenone (3mmol, 1.044g) of 2,7-, bis- bromo, 4- (diphenyl amido) phenyl boric acid (1.5mmol, 0.438g), the feelings that potassium carbonate (2mmol, 0.2764g) and four (three) phenyl phosphorus palladiums (0.0025mmol, 0.0311g) are protected in nitrogen It is dissolved under condition in the mixed solution of tetrahydrofuran (20ML) and toluene (30ML), and the deionized water of 2ml is added, flowed back 8 Hour, it after system is cooling, is extracted with deionized water and methylene chloride mix reagent, the organic anhydrous magnesium sulfate that is added to of gained is done Dry, revolving mixes sample later, selects corresponding mobile phase to chromatograph column, finally obtains 2- triphenylamine -7- bromo -9- Fluorenone monomer; Later, by 2- triphenylamine -7- bromo -9-Fluorenone monomer (3mmol, 1.503g), tributyl, (2,3- dihydro-thiophenes are simultaneously [3,4-b] - [Isosorbide-5-Nitrae] dioxin -5- base) stannane (3mmol, 1.2963g), potassium carbonate (2mmol, 0.2764g) and bi triphenyl phosphorus dichloride Palladium (0.025mmol, 0.01755g) is dissolved in the mixed solution of tetrahydrofuran (20mL) and toluene (30mL), and 2ml is added Deionized water, flow back in nitrogen atmosphere 24 hours, after system is cooling, with deionized water and methylene chloride mix reagent Extraction, gained is organic to be added to that anhydrous magnesium sulfate is dry, and revolving mixes sample later, select corresponding mobile phase (PE: DCM=1: 1.5) column was chromatographed to get monomer (EWT).1H NMR (500MHz, DMSO) δ 8.08 (d, J=1.4Hz, 1H), 7.92 (d, J =1.5Hz, 1H), 7.82 (dd, J=7.9,1.7Hz, 1H), 7.73 (dd, J=7.8,1.8Hz, 1H), 7.51 (d, J=3.9 Hz, 1H), 7.50 (d, J=4.1Hz, 1H), 7.39 (dd, J=3.6,1.0Hz, 1H), 7.32 (dd, J=5.1,1.0Hz, 1H), 7.11 (dd, J=5.1,3.6 Hz, 1H), 6.35 (s, 1H), 4.40-4.34 (m, 2H), 4.30-4.24 (m, 2H)) MALDI- TOF-MS(M)(m/z):564.1[M+H]+.
(2) preparation of polymer (PEWT) material
By EWT monomer (1mmol, 0.00563g), lithium hexafluoro phosphate (1mmol, 0.152g) be dissolved in 7ml methylene chloride with In the mixed solution of 3ml acetonitrile, it is configured to that monomer concentration is 0.005mol/L, supporting electrolyte TBAP concentration is 0.1mol/L's Mixed solution is as electrolyte.Three-electrode cell system is selected, (successively using indium tin electro-conductive glass (ITO) as working electrode The supersound washing 15min in 0.1% sodium hydroxide solution, dehydrated alcohol, acetone, toluene, dehydrated alcohol, toluene and acetone), with Polished platinum filament is reference electrode (Ag/ as auxiliary electrode (platinum filament length 4cm), using biliquid direct type silver/silver chloride electrode The potassium chloride solution of AgCl, 3mol/L connect as the first liquid, and the electrolyte that above-mentioned preparation obtains connects as the second liquid).In room Under warm (25 DEG C), thin polymer film is prepared using cyclic voltammetric anodic oxidation polymerization method, sets the starting of the monomer polymerization first Voltage 0v, final voltage 1.6v and sweep speed 0.1v/s, and set polymerisation loop circle number (obtaining polymeric film thicknesses is as 16 630nm), start the working procedure of electrochemical workstation.By the cyclic voltammetric polymerization curve of monomer it is found that the oxidation of monomer Current potential is 1.1v and 1.47v, and monomer molecule has excellent polymerization film formation ability, is had compared to EWE, structures alone EWT There are more oxidation-reduction potentials.Polymerization power cut-off electrode ITO conductive glass surface deposited one layer of polymeric film, with two Chloromethanes cleaning obtains the working electrode of surface deposited polymer membrane, is characterized by scanning electron microscope it is found that polymer thin after dry Polymer is more loose relatively above on the surface of film, but by 500 circulation after, pattern variation it is smaller, illustrate polymeric membrane compared with For stabilization.
(3) polymer (PEWT) electrochemical property test
Lithium hexafluoro phosphate (1mmol, 0.152g) is dissolved in the mixed solution of 6ml methylene chloride and 4ml acetonitrile, is configured to Concentration is the electrolyte solution of 0.1mol/L, selects three-electrode cell system, using polymeric membrane PEWT as working electrode, with Polished platinum filament is reference electrode (Ag/ as auxiliary electrode (platinum filament length 4cm), using biliquid direct type silver/silver chloride electrode The potassium chloride solution of AgCl, 3mol/L connect as the first liquid, and the electrolyte that above-mentioned preparation obtains connects as the second liquid).In room Under temperature, the cyclic voltammetry curve of the polymeric membrane is tested, i.e., in the case where polymerizeing 0~1.6V of voltage range vs.Ag/AgCl, to containing poly- The working electrode of film is closed with rate loop voltammetric scan one week of 0.1v/s, by the cyclic voltammetry curve of polymeric membrane it is found that the D- There are A-D ' dissymmetrical structure conjugated polymer PEWT more redox peaks and richer color to show when in neutrality When state, which is shown as BurlyWood;With the raising of voltage, which slowly becomes blue, when reaching 0.9V to voltage, is shown as bright Rock grey;Then, voltage is slowly brought up to 1.4V, is shown as mine purple.It is right at 1100nm by test it is found that under identical film thickness The 48.8% of PEWT is risen to by the 31.3% of PEWE than degree;At 650nm, contrast is increased to PEWT by the 11.4% of PEWE 26.7%, relative to D-A-D symmetrical structure polymeric membrane PSWS, the introducing of trianilino group significantly alterred its visible and The optical contrast of near infrared region.
Embodiment 5
(1) preparation of monomer EWT
First by -9 Fluorenone (3mmol, 1.044g) of 2,7-, bis- bromo, 4- (diphenyl amido) phenyl boric acid (1.5mmol, 0.438g), the feelings that potassium carbonate (2mmol, 0.2764g) and four (three) phenyl phosphorus palladiums (0.0025mmol, 0.0311g) are protected in nitrogen It is dissolved under condition in the mixed solution of tetrahydrofuran (20ML) and toluene (30ML), and the deionized water of 2ml is added, flowed back 8 Hour, it after system is cooling, is extracted with deionized water and methylene chloride mix reagent, the organic anhydrous magnesium sulfate that is added to of gained is done Dry, revolving mixes sample later, selects corresponding mobile phase to chromatograph column, finally obtains 2- triphenylamine -7- bromo -9- Fluorenone monomer; Later, by 2- triphenylamine -7- bromo -9-Fluorenone monomer (3mmol, 1.503g), tributyl, (2,3- dihydro-thiophenes are simultaneously [3,4-b] - [Isosorbide-5-Nitrae] dioxin -5- base) stannane (3mmol, 1.2963g), potassium carbonate (2mmol, 0.2764g) and bi triphenyl phosphorus dichloride Palladium (0.025mmol, 0.01755g) is dissolved in the mixed solution of tetrahydrofuran (20mL) and toluene (30mL), and 2ml is added Deionized water, flow back in nitrogen atmosphere 24 hours, after system is cooling, with deionized water and methylene chloride mix reagent Extraction, gained is organic to be added to that anhydrous magnesium sulfate is dry, and revolving mixes sample later, select corresponding mobile phase (PE: DCM=1: 1.5) column was chromatographed to get monomer (EWT).1H NMR (500MHz, DMSO) δ 8.08 (d, J=1.4Hz, 1H), 7.92 (d, J =1.5Hz, 1H), 7.82 (dd, J=7.9,1.7Hz, 1H), 7.73 (dd, J=7.8,1.8Hz, 1H), 7.51 (d, J=3.9 Hz, 1H), 7.50 (d, J=4.1Hz, 1H), 7.39 (dd, J=3.6,1.0Hz, 1H), 7.32 (dd, J=5.1,1.0Hz, 1H), 7.11 (dd, J=5.1,3.6 Hz, 1H), 6.35 (s, 1H), 4.40-4.34 (m, 2H), 4.30-4.24 (m, 2H)) MALDI- TOF-MS(M)(m/z):564.1[M+H]+.
(2) preparation of polymer (PEWT) material
EWT monomer (1mmol, 0.00563g), tetrabutylammonium perchlorate (1mmol, 0.342g) are dissolved in 7ml methylene chloride In the mixed solution of 3ml acetonitrile, it is configured to that monomer concentration is 0.005mol/L, supporting electrolyte TBAP concentration is 0.1mol/L Mixed solution as electrolyte.Select three-electrode cell system, using indium tin electro-conductive glass (ITO) as working electrode (according to The secondary supersound washing 15min in 0.1% sodium hydroxide solution, dehydrated alcohol, acetone, toluene, dehydrated alcohol, toluene and acetone), Using polished platinum filament as auxiliary electrode (platinum filament length 4cm), reference electrode is done using biliquid direct type silver/silver chloride electrode (potassium chloride solution of Ag/AgCl, 3mol/L connect as the first liquid, and the electrolyte that above-mentioned preparation obtains connects as the second liquid). Under room temperature (25 DEG C), thin polymer film is prepared using cyclic voltammetric anodic oxidation polymerization method, sets the monomer polymerization first Starting voltage 0v, final voltage 1.6v and sweep speed 0.1v/s, and set polymerisation loop circle number and (obtain polymeric film thicknesses as 16 For 630nm), start the working procedure of electrochemical workstation.By the cyclic voltammetry curve of monomer it is found that the oxidation electricity of monomer Position is 1.1v and 1.47v, and monomer molecule has excellent polymerization film formation ability, and compared to EWE, structures alone EWT has More oxidation-reduction potentials.Polymerization power cut-off electrode ITO conductive glass surface deposited one layer of polymeric film, with two Chloromethanes cleaning obtains the working electrode of surface deposited polymer membrane after dry, by scanning electron microscope it is found that thin polymer film Polymer is more loose relatively above on surface, but after 500 circulations, pattern variation is smaller, illustrates that polymeric membrane is more steady It is fixed.
(3) polymer (PEWT) electrochemical property test
Tetrabutylammonium perchlorate (1mmol, 0.342g) is dissolved in the mixed solution of 12ml methylene chloride and 8ml acetonitrile, It is configured to the electrolyte solution that concentration is 0.05mol/L, three-electrode cell system is selected, using polymeric membrane PEWT as work Electrode does reference using biliquid direct type silver/silver chloride electrode using polished platinum filament as auxiliary electrode (platinum filament length 4cm) (potassium chloride solution of Ag/AgCl, 3mol/L connect electrode as the first liquid, and the electrolyte that above-mentioned preparation obtains is as the second liquid It connects).At room temperature, test the cyclic voltammetry curve of the polymeric membrane, i.e., in the case where polymerizeing 0~1.6V of voltage range vs.Ag/AgCl, To the working electrode containing polymeric membrane with rate loop voltammetric scan one week of 0.1v/s, by testing it is found that the D-A-D ' is not right Claim structure conjugated polymer PEWT that there are more redox peaks and richer color to show when in middle condition, the material Material is shown as BurlyWood;With the raising of voltage, which slowly becomes blue, when reaching 0.9V to voltage, is shown as bright rock grey;With Afterwards, voltage is slowly brought up to 1.4V, is shown as mine purple.Under identical film thickness, at 1100nm, contrast is by the 31.3% of PEWE Rise to the 48.8% of PEWT;At 650nm, contrast is increased to the 26.7% of PEWT by the 11.4% of PEWE, relative to D-A-D pairs Claim topology convergence film PSWS, the introducing of trianilino group has significantly alterred it in visible and near infrared region optical contrast.

Claims (10)

1. a kind of D-A-D ' unsymmetric structure polymeric membrane PEWT, it is characterised in that:D-A-D ' the unsymmetric structure polymeric membrane PEWT is specifically prepared as follows:
(1) -9 Fluorenone of 2,7-, bis- bromo shown in formula 1 is mixed with 4- (diphenyl amido) phenyl boric acid, four (three) phenyl phosphorus palladiums, It under the action of alkaline matter A, is dissolved in organic solvent A in the case where nitrogen is protected, reacts 8-12 hours at a reflux temperature, Reaction mixture B is obtained, it is post-treated to obtain product 2- triphenylamine -7- bromo -9-Fluorenone shown in formula 2;Shown in the formula 1 The ratio between amount of substance of -9 Fluorenone of bis- bromo of 2,7- and 4- (diphenyl amido) phenyl boric acid, four (three) phenyl phosphorus palladiums is 1:0.5~ 1:0.001~0.005;The alkaline matter A is added in form of an aqueous solutions, and the additional amount of the water to dissolve alkalinity just Subject to substance A;The additional amount of the alkaline matter A is calculated as 2~4mol/L with the volume of the organic solvent A;Described The additional amount of organic solvent A is calculated as 10~100mL/ with the amount of the substance of -9 Fluorenone of bis- bromo of 2,7- shown in the formula 1 mmol;
(2) by 2- triphenylamine -7- bromo -9-Fluorenone shown in formula 2 and tributyl (2,3- dihydro-thiophene simultaneously [1,4] [3,4-b] - Dioxin -5- base) stannane, bi triphenyl phosphorus palladium chloride, under the action of alkaline matter B, nitrogen protect in the case where be dissolved in In organic solvent B, reacts 24-36 hours at a reflux temperature, obtain reaction mixture C, it is post-treated to obtain D-A- shown in formula 3 D ' unsymmetric structure monomer EWT;2- triphenylamine -7- bromo-the 9-Fluorenone and tributyl (2,3- dihydro-thiophene simultaneously [3,4- B]-[1,4] dioxin -5- base) stannane, bi triphenyl phosphorus palladium chloride the ratio between the amount of substance be 1:1~2:0.001~ 0.005;The alkaline matter B is added in form of an aqueous solutions, and the additional amount of the water is to dissolve alkaline matter B just It is quasi-;The additional amount of the alkaline matter B is calculated as 2~4mol/L with the volume of the organic solvent B;The organic solvent The additional amount of B is calculated as 10~100mL/mmol with the amount of 2- triphenylamine -7- bromo -9-Fluorenone substance shown in the formula 2;
(3) D-A-D ' unsymmetric structure monomer EWT obtained by step (3), support electrolyte are dissolved in electroanalysis solvent and are electrolysed Liquid, in three-electrode cell, using cyclic voltammetric anodic oxidation polymerization method, in polymerization voltage range in 0~1.6V vs.Ag/ AgCl carries out deposition reaction, after fully reacting, obtains depositing on the working electrode (s under conditions of polymerisation loop circle number is 2~32 Thin polymer film, through organic solvent cleaning, be dried to obtain thin polymer film PEWT shown in formula 4;The support electrolyte For ammonium salt, lithium salts or 1- butyl -3- methyl imidazolium tetrafluoroborate;It is 1 that the electrolytic cell solvent, which is volume ratio,:0.1~10 Acetonitrile and methylene chloride mixed solvent;D-A-D ' unsymmetric structure monomer EWT shown in the formula 3 or support electrolyte Additional amount come by the volume of the electroanalysis solvent in terms of, D-A-D ' unsymmetric structure monomer EWT shown in the formula 3 Initial final concentration of 0.1~10mmol/L electroanalysis solvent, initial final concentration of 0.01~1mol/L of the supporting electrolyte Electroanalysis solvent;
The three-electrode system is made of electrolytic cell, working electrode, auxiliary electrode and reference electrode, and the working electrode is Perhaps the PET conductive film electrode auxiliary electrode is platinum electrode or platinum carbon electrode, institute by indium tin oxide-coated glass, FTO It with the potassium chloride solution of 3mol/L is that the first liquid connects that the reference electrode stated, which is Ag/AgCl, with the electrolyte for the second liquid It connects;
2. D-A-D ' unsymmetric structure polymeric membrane PEWT as claimed in claim 1, it is characterised in that:It is described in step (1) Alkaline matter A is sodium carbonate, sodium bicarbonate or potassium carbonate.
3. D-A-D ' unsymmetric structure polymeric membrane PEWT as claimed in claim 1, it is characterised in that:It is described in step (1) Organic solvent A is the mixed solvent that tetrahydrofuran mixes in any proportion with toluene.
4. D-A-D ' unsymmetric structure polymeric membrane PEWT as claimed in claim 1, it is characterised in that:It is described in step (2) Alkaline matter B is sodium carbonate, sodium bicarbonate or potassium carbonate.
5. D-A-D ' unsymmetric structure polymeric membrane PEWT as claimed in claim 1, it is characterised in that:It is described in step (2) Organic solvent B is the mixed solvent that tetrahydrofuran mixes in any proportion with toluene.
6. D-A-D ' unsymmetric structure polymeric membrane PEWT as claimed in claim 1, it is characterised in that:In step (2), gained is anti- The last handling process for answering mixed liquor C is:After reaction, deionized water and methylene chloride are added into gained reaction mixture C Mix reagent extracted, it is simultaneously dry with anhydrous magnesium sulfate to merge organic phase, revolving mixes sample, with volume ratio for 1:0.5-2.5 Petroleum ether and the mixed solvent of methylene chloride be that mobile phase composition through chromatography obtains D-A-D ' unsymmetrical knot shown in formula 3 Structure monomer EWT.
7. D-A-D ' unsymmetric structure polymeric membrane PEWT as claimed in claim 1, it is characterised in that:It is described in step (3) Ammonium salt is tetrabutylammonium perchlorate or tetrabutyl ammonium hexafluorophosphate.
8. D-A-D ' unsymmetric structure polymeric membrane PEWT as claimed in claim 1, it is characterised in that:It is described in step (3) Lithium salts is lithium hexafluoro phosphate, LiBF4 or trifluoromethyl sulfonic acid lithium.
9. D-A-D ' unsymmetric structure polymeric membrane PEWT as claimed in claim 1, it is characterised in that:In step (3), the use It is volume ratio in the organic solvent of cleaning is 1:0.1~10 acetonitrile and methylene chloride mixed solvent.
10. a kind of D-A-D ' unsymmetric structure polymeric membrane PEWT as described in claim 1 is applied to prepare electrochromic device.
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WO2013008951A1 (en) * 2011-07-13 2013-01-17 National Institute For Materials Science Organic dye, dye-sensitized metal oxide semiconductor electrode and dye-sensitized solar cell
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